Senior Backend Software Engineer

Sobre el puesto

At Fourthline, our mission is to fight financial crime. We help protect the global financial system by verifying millions of identities for banks, neobanks, online brokers, crypto exchanges, and insurers like N26, Trade Republic, flatexDEGIRO, Nationale Nederlanden, Qonto, Shine, Solarisbank, and more.

Having started our journey in January 2018, we're incredibly proud to count around 250 employees between our Amsterdam and Barcelona offices with over 50 nationalities.

Prevent financial crime by building best-in-class SaaS solutions with our talented Anti-Money Laundering (AML) and Bank Account Verification (BAV) + Qualified Electronic Signatures (QES) teams in Barcelona—we’re looking for a Senior Backend Software Engineer who brings solid technical expertise, a product-driven mindset, and a collaborative spirit across diverse domains and skill levels.

As a senior backend engineer at Fourthline, you will:

• Design, develop, maintain, and improve our microservices, and take responsibility for thorough testing and reliable deployments of your stories.

• Professionally manage your tasks, priorities and deliverables, taking joint ownership with your teammates for the sprint goals.

• Utilize your experience to contribute to our growth through lessons learned from your successes and failures.

• Take responsibility for engineering excellence and participate in architectural decision-making within your team.

• Contribute to thorough documentation—crucial for ensuring success and minimizing questions!

• Understand the entire development lifecycle and work closely with other members in squads, including Platform and QA teams.

• Employ both technical and soft skills to address challenges, recognizing that solutions often require a blend of technology-based and people-based strategies.

Emphasis on Collaboration

At Fourthline, we foster a collaborative culture informed by industry knowledge (FinTech) and deep understanding of our business objectives. You will actively participate in chapter meetings, knowledge sharing sessions and cross-discipline alignments with other teams and engineering disciplines.

Career Growth and Development

At Fourthline, we offer opportunities for learning and development, allowing you to work alongside and learn from experienced engineers. As you grow within our team, there are possibilities to grow to Staff Engineer level and beyond, with clear pathways to further your technical, problem solving and communication competencies, as well as build your knowledge of the FinTech industry.

Our Stack

.NET 5-8 – Our cloud-based microservices architecture includes REST APIs, Docker, Message Queues (RabbitMQ), RDBMS (PostgreSQL), Wolverine, Marten (Doc + Event stores), and much more!

Job Requirements

• Minimum 5 years software development experience in one or more general-purpose programming languages.

• Good knowledge of .NET 5-8, or .NET Core 3.x

• Proficiency in C# (version 10 or later).